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Kennametal Inc patents


Recent patent applications related to Kennametal Inc. Kennametal Inc is listed as an Agent/Assignee. Note: Kennametal Inc may have other listings under different names/spellings. We're not affiliated with Kennametal Inc, we're just tracking patents.

ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 | Company Directory "K" | Kennametal Inc-related inventors


Control and characterization of texture in cvd alpha-al2o3 coatings

Cvd alumina coating has been one of the most important materials for wear resistant application for many years. Recently, texture control in α-al2o3 has attracted increasing attention due to the possibility to further improve the anisotropic properties such as thermal conductivity and mechanical properties. ... Kennametal Inc

Imparting wear resistance to superalloy articles

In one aspect, composite preforms are provided for imparting wear resistance to superalloy articles. The composite preforms can be employed for metallurgically bonding alloy wear plates or pads to superalloy articles. ... Kennametal Inc

Tangentially mounted cutting insert with angled seating surface and recessed clearance surface

A milling insert includes a first axial face, a second axial face, a first radial face, a second radial face parallel with the first radial face, a cutting face, and a generally v-shaped seating face formed with a first seating surface and a second seating surface. The first axial face defines a secondary clearance surface that is at least partially axially recessed from the first axial face and oblique to the first radial face. ... Kennametal Inc

Modular rotary tool and modular tool system

The invention relates to a modular rotary tool, which extends along an axis of rotation (6) in the longitudinal direction and which has a carrier provided with flutes as well as a cutting head exchangeably secured on said carrier, wherein the carrier has on the end surface a coupling receiving means for receiving a coupling pin of the cutting head, wherein in the carrier, a coolant channel is formed, which terminates at a first outlet opening in the coupling receiving means, and wherein a branch channel is provided, which is spaced apart from the coupling receiving means and which opens into the coolant channel at one end and terminates at a second outlet opening in the flute at the other end.. . ... Kennametal Inc

Cutting tool, in particular a boring bar, and method for machining a number of holes

The present application relates to a cutting tool (2), in particular a boring bar (2) for machining holes (16) separated from each other in an axial direction (4) by a given spacing distance (a), comprising a main body (10) extending in an axial direction (4) with an axis of rotation (r) with at least one cutting element (12), as well as with a number of guide elements (14) for guiding the main body (10) within a guide hole (16a), wherein the guide elements (14) for the axis of rotation (r) are separated by a guide radius (r1), wherein viewed in a cross-section, the main body (10) is divided into a functional region (19) and an eccentric region (20), wherein the cutting elements (12) and the guide elements (14) are arranged distributed over the circumference of the main body (10) over an angular region (α) of less than 180°.. . ... Kennametal Inc

Rotary tool

The rotary tool has two coupling parts, namely a carrier and a cutting head having a front end face. The carrier has a pin seat into which a coupling pin of the cutting head is inserted. ... Kennametal Inc

Twist drill with unequal flute spacing and unequal relief angles

A twist drill having a shaft with a longitudinal axis, wherein the cutting tool includes a plurality of flutes extending about the longitudinal shaft along a helix angle and a plurality of lands adjacent the flutes. Each land has a cutting edge adjacent a corresponding flute and a margin (i.e. ... Kennametal Inc

Cemented carbide powders for additive manufacturing

In one aspect, particle powder compositions are provided for article manufacture by various additive manufacturing techniques. A powder composition comprises a particle component comprising sintered cemented carbide particles having apparent density of at least 6 g/cm3.. ... Kennametal Inc

Cutting tool made by additive manufacturing

A cutting tool made by an additive manufacturing process is disclosed. The cutting tool has an exterior surface and an enclosed interior cavity defined by one or more inwardly facing surfaces. ... Kennametal Inc

Composite suction liners and applications thereof

Composite suction liners and associated centrifugal pump architectures are described herein which, in some embodiments, provide enhanced operating lifetimes under abrasive slurry conditions. For example, a composite suction liner includes a suction liner substrate and a monolithic cladding metallurgically bonded to a face of the suction liner substrate, the monolithic cladding comprising metal matrix composite including a hard particle phase dispersed in matrix metal or alloy.. ... Kennametal Inc

Adjustable cartridge assembly for cutting tool

A cutting tool includes a cartridge-receiving pocket, and an adjustable cartridge assembly mounted in the cartridge-receiving pocket. The adjustable cartridge assembly includes a cartridge with an insert-receiving pocket and a wedge. ... Kennametal Inc

Metal-cutting tool, in particular a reaming tool and method of making the same

A reaming tool includes a tool body having an axially rearward shank portion and an axially forward cutting portion, the forward cutting portion having at least one peripherally arranged cutting insert. The reaming tool also includes an inlet coolant channel formed in the tool body and an inlet opening at an axially rearward end of the shank portion. ... Kennametal Inc

Method of non-destructive testing a cutting insert to determine coating thickness

A method for non-destructive testing a cutting insert to determine coating thickness is disclosed. The method includes the steps of using a source of electromagnetic energy to ablate a surface of the cutting insert to non-destructively form a geometric feature and expose the substrate and each layer of the coating; and measuring the thickness of each layer of the coating. ... Kennametal Inc

Side-activated modular drill

A rotary cutting tool with a shank and an interchangeable cutting tip, wherein the shank includes a pocket which receives the interchangeable cutting tip via an interference fit. The pocket includes two centering wall portions which, when viewed along a central longitudinal axis, are oriented at a first angle with respect to one another, the first angle being greater than zero. ... Kennametal Inc

06/07/18 / #20180154472

Rotary tool for precision machining of a drilled hole in a workpiece, and method for precision machining of a drilled hole

In order to achieve as highly accurate an alignment of the frictional tool as possible and therefore as high a drilled hole quality as possible during the precision machining of a drilled hole, the cutting edges of the frictional tool are divided into two cutting groups, the cutting edges of which are spaced apart with respect to one another in each case by an axial spacing from one another. Here, the axial spacing is selected in such a way that, at a predefined first, slower feed speed, merely the cutting edges of the first cutting edge group are in engagement with the workpiece and, at a higher, predefined second feed speed, all cutting edges are in engagement with the workpiece.. ... Kennametal Inc

06/07/18 / #20180154465

Cutting insert with internal coolant passages and method of making same

A cutting insert (100,100′) includes a body (102) having a top face (104), a bottom face (106) opposite the top face (104), and at least one flank face (108, 110, 112, 114). A coolant inlet aperture (126), a coolant outlet aperture (132, 134), and an internal coolant passage (128, 130) in fluid communication with the coolant inlet aperture (126) and the coolant outlet aperture (132, 134) are formed using electro-magnetic radiation. ... Kennametal Inc

06/07/18 / #20180154454

Expanding clamping sleeve, toolholder having such an expanding clamping sleeve and method for clamping a tool

The invention relates to an expanding clamping sleeve for an expanding chuck having a first and a second bearing section, a clamping section that can grasp a tool, and a thrust section that is arranged between the clamping section and the first bearing section. The invention further relates to a toolholder having such an expanding clamping sleeve, wherein a contact surface is provided for a tool-side stop. ... Kennametal Inc

06/07/18 / #20180154453

Eddy current vibration absorber assembly for cutting tool

A cutting tool includes a cutting insert mounted to a head attached to a collar at a first end of the cutting tool. A shank is located at a second, opposite end of the cutting tool. ... Kennametal Inc

06/07/18 / #20180154452

Cutting insert

A cutting insert including a body having three vertices, an upper face, a lower face, and flank faces joining the upper and lower faces. At least one cutting edge is formed at an intersection between the upper face and the flank faces. ... Kennametal Inc

05/17/18 / #20180133813

Tangentially mounted indexable cutting insert with convex-shaped minor side surfaces and concave-shaped end surfaces

A cutting insert having two opposing end surfaces, two identical opposing major side surfaces and two identical opposing minor side surfaces. Each end surface of the insert has a concave-shaped seating surface for contacting the insert pocket the insert pocket along an entire length of the cutting insert. ... Kennametal Inc

05/10/18 / #20180126467

Tool head for a modular shank tool

A tool head for use with a modular shank tool includes at least two preforms. Each preform of the at least two preforms is made separately from the other preform of the at least two preforms from granular materials and then put together and jointly compressed and integrally bonded.. ... Kennametal Inc

04/05/18 / #20180093330

Cutting tool and method for its manufacture

A cutting tool (2)—in particular a rotary tool—is described, having a cutting edge (4) from which a rake face (6) and a clearance face (8) extend, characterized in that a groove (12) is introduced into the clearance face (8) in a region along the cutting edge (4) so that a part of the clearance face (8) is formed as a wear face (14) that extends between the groove (12) and the cutting edge (4) and is bounded by the groove (12) and the cutting edge (4). The groove (12) advantageously limits the wear of the cutting tool (2) in the region of the cutting edge (4) on the wear surface (14), so that overall the frictional forces that occur are kept small and the service life of the cutting tool (2) is extended. ... Kennametal Inc

03/29/18 / #20180085832

Tool holder for an indexable cutting insert and cutting tool

A tool holder (12) for an indexable cutting insert (13) is disclosed, comprising a tool holder base body (15), having a receiving pocket (20) for receiving an indexable cutting insert (13) and a fastening pin (17). The fastening pin (17) can assume a mounting position and a clamping position. ... Kennametal Inc

03/01/18 / #20180057934

Composite refractory coatings and applications thereof

In one aspect, articles are described comprising wear resistant coatings employing one or more composite refractory layers. For example, a coated article described herein comprises a substrate and a coating deposited by cvd adhered to the substrate, the coating including a multiphase refractory layer comprising an alumina phase and a zirconia phase, wherein the zirconia phase has a texture coefficient for the (200) growth direction, tc(200), greater than 4.. ... Kennametal Inc

02/22/18 / #20180050397

Tool body for a shell end mill and cutting tool

A tool body (12) for a shell end mill (10) is described with at least one helical chip guiding groove (24) arranged at the circumference of the tool body (12) for chip dissipation and at least two receptacles (28) for indexable cutting inserts (26) arranged at the chip guiding groove (24). In this case, the receptacles (28) each comprise a base surface having a bore for receiving an indexable cutting insert fastening screw (34) and at least one first abutment surface adjacent to the base surface. ... Kennametal Inc

02/01/18 / #20180032056

System and method for selecting a tool assembly

A method of identifying a multi-component cutting tool assembly to a user includes the steps of: receiving an indication from the user of a desired characteristic of at least one of the cutting tool assembly or of a workpiece to be machined, determining at least a portion of a first set of characteristics associated with a first component of the plurality of tool components corresponds to the desired characteristic, determining at least a portion of a second set of characteristics associated with a second component of the plurality of tool components corresponds to a portion of the first set of characteristics and responsive thereto grouping the first component and the second component together to form a combination and identifying the combination to the user as the cutting tool assembly.. . ... Kennametal Inc

02/01/18 / #20180029150

Reamer

A reamer has a shank made of steel and a cutting body made of a harder material, wherein the cutting body forms the outer circumference of the reamer in the region of the workpiece side end and has all the cutting ribs.. . ... Kennametal Inc

02/01/18 / #20180029135

Ultra-precise boring cartridge and adjustment device therefor

An ultra-precise boring cartridge and an adjustment device is disclosed. The boring cartridge includes a cam, a cam follower contacting the cam by a slopped portion, and a spring arrangement exerting a biasing force against the cam follower. ... Kennametal Inc

01/04/18 / #20180001398

Cutting tool with enhanced chip evacuation capability and method of making same

A milling cutter having a shank and a cutting head attached to the shank. The cutting head has a plurality of helical teeth, each tooth including a cutting tip, a leading face and a rear face. ... Kennametal Inc

12/14/17 / #20170356091

Multilayer structured coatings for cutting tools

Cutting tools are described having coatings which can demonstrate desirable wear resistance and increased cutting lifetimes. A coated cutting tool described herein has a substrate and a coating with a plurality of alternating layers of a first layer of al2o3 and a second layer of at least one of meal2o3 and meal2o3/meo2 composite, wherein me is zr, hf, ti or a combination thereof. ... Kennametal Inc

11/30/17 / #20170342831

Rotatable cutting tool with cutting insert and bolster

A rotatable cutting tool (10) includes a cutting tool body (12) having an axial forward end (14) and an axial rearward end (16). A bolster (46) at least partially received in a head portion (22) and includes a convex-shaped head portion (56) with a socket (20), a collar portion (58) and a tapered shank portion (60). ... Kennametal Inc

11/30/17 / #20170341157

Tool holder for a cutting tool and sleeve for a tool holder

A tool holder for a cutting tool having a tool shank includes a receptacle which extends in an axial direction and a sleeve disposed in the receptacle. The sleeve includes a tool receptacle structured to at least partially receive the tool shank and a blocking element that projects radially into the tool receptacle. ... Kennametal Inc

11/30/17 / #20170341148

Cladded articles and applications thereof

In one aspect, composite articles are described herein employing cobalt-based alloy claddings exhibiting high hardness and wear resistance while maintaining desirable integrity and adhesion to surfaces of metallic substrates. A composite article, in some embodiments, comprises a metallic substrate and a composite cladding metallurgically bonded to one or more surfaces of the metallic substrate, the composite cladding including cobalt-based alloy having a chromium gradient, wherein chromium content increases in a direction from the composite cladding surface to an interface of the composite cladding with the metallic substrate.. ... Kennametal Inc

11/23/17 / #20170334789

Sintered ceramic bodies and applications thereof

In one aspect, sintered ceramic bodies are described herein which, in some embodiments, demonstrate improved resistance to wear and enhanced cutting lifetimes. For example, a sintered ceramic body comprises tungsten carbide (wc) in an amount of 40-95 weight percent, alumina in an amount of 5-30 weight percent and ditungsten carbide (w2c) in an amount of at least 1 weight percent.. ... Kennametal Inc

11/23/17 / #20170334788

Sintered ceramic bodies and applications thereof

In one aspect, sintered ceramic bodies are described herein which, in some embodiments, demonstrate improved resistance to wear and enhanced cutting lifetimes. For example, a sintered ceramic body comprises tungsten carbide (wc) in an amount of 40-95 weight percent, alumina in an amount of 5-30 weight percent and ditungsten carbide (w2c) in an amount of at least 1 weight percent.. ... Kennametal Inc

11/16/17 / #20170326653

Drill

The drill comprises a base body, which extends in the axial direction along an axis of rotation and rotates about the axis of rotation in a direction of rotation during operation. Into the base body are incorporated flutes and between consecutive flutes is formed a rear surface, which extends, in relation to the direction of rotation, from a leading flute to a trailing flute. ... Kennametal Inc

11/09/17 / #20170320141

Apparatus and method for cooling a cutting tool using super critical carbon dioxide

A toolholder includes a pocket assembly having a nest section and a clamp section. An inverted nest is mounted in the nest section and includes an insert-receiving pocket for accommodating a cutting insert mounted therein. ... Kennametal Inc

10/26/17 / #20170306456

Cemented carbide articles and applications thereof

In one aspect sintered cemented carbide articles are described herein which, in some embodiments, exhibit enhanced resistance to wear and thermal fatigue. Further, sintered cemented carbide articles described herein can tolerate variations in carbon content without formation of undesirable phases, including eta phase and/or free graphite (c-type porosity). ... Kennametal Inc

09/21/17 / #20170266734

Drilling tool

A drilling tool with: a shaft; a seat at one end of the shaft; a drill bit, which is arranged on the seat; and a clamping section, which is provided on the shaft and can interact with the drill bit. Also provided is a tensioning screw, which is screwed into the shaft and comprises an expanding section as well as a contact section. ... Kennametal Inc

09/14/17 / #20170259347

Hydraulic expansion chuck and method for producing such an expansion chuck

Hydraulic expansion chuck with a basic body, with an expansion bush which is received in the basic body and defines a reception space for a tool to be clamped, and with a pressure chamber which is delimited between the expansion bush and the basic body. A securing pin which extends through the basic body and the expansion bush into the reception space. ... Kennametal Inc

09/07/17 / #20170252836

Cutting insert for a milling cutter and milling cutter

A cutting insert (20) for a milling cutter (10) is described, wherein the cutting insert (20) comprises a first main surface (22) for abutment against a stop surface (24) oriented substantially perpendicular to the direction of rotation of the milling cutter (10), a second main surface (26) which is opposite to the first main surface (22), which comprises the cutting surface, and a lateral surface (28) which connects the first main surface (22) with the second main surface (26) and which comprises the free surface. The lateral surface (28) has at least one clamping section (38) by which the cutting insert (20) is clamped in a recess (18) in a tool body (12) by means of a clamping element (40), in particular wherein the cutting insert (20) is a turning cutting insert. ... Kennametal Inc

09/07/17 / #20170252835

Cutting tool assembly for milling a rail top

A cutting tool assembly for milling a rail top, includes a first section and a second section mounted to the first section. Each section includes a plurality of insert-receiving pockets for receiving a plurality of different types of cutting inserts. ... Kennametal Inc

08/17/17 / #20170233852

Wear resistant and corrosion resistant cobalt-based alloy powders and applications thereof

Cobalt-based alloy compositions are described herein having properties compatible with thermal spray and sintering techniques. Such alloy compositions can provide claddings to a variety of metallic substrates having complex geometries, wherein the claddings exhibit desirable density, hardness, wear resistance and corrosion resistance. ... Kennametal Inc

08/10/17 / #20170226634

Inter-anchored multilayer refractory coatings

In one aspect, articles are described herein comprising refractory coatings employing an inter-anchored multilayer architecture. Articles having refractory coatings described herein, in some embodiments, are suitable for high wear and/or abrasion applications such as metal cutting operations. ... Kennametal Inc

08/03/17 / #20170218511

Pvd-coated cutting tools and method for making the same

A coated cutting insert includes a substrate that is either a ceramic substrate or polycrystalline cubic boron nitride-containing substrate and has a substrate surface. A base coating scheme is applied by chemical vapor deposition to the substrate surface wherein the base coating scheme includes the following coating layers: an inner coating layer adjacent to the substrate surface wherein the inner coating layer is a nitride selected from the group consisting of titanium nitride, zirconium nitride and hafnium nitride; an inner mediate coating layer deposited to the inner coating layer wherein the inner mediate coating layer is a carbonitride selected from the group consisting of titanium carbonitride, zirconium carbonitride and hafnium carbonitride; an outer mediate coating layer deposited to the inner mediate coating layer and wherein the outer mediate coating layer is a carbonitride selected from the group consisting of titanium carbonitride, zirconium carbonitride and hafnium carbonitride; and an outer coating layer deposited on the outer mediate coating layer wherein the outer coating layer is a carbide selected from the group consisting of titanium carbide, zirconium carbide and hafnium carbide. ... Kennametal Inc

07/20/17 / #20170204676

Roof drill bit and associated coupler

A coupler for use with a roof drill bit includes an elongate coupler body having a forward end for removably attaching the roof drill bit thereto and a rearward drive end. The elongate coupler body contains an interior bore therein and a dust port formed on an outer surface of the elongate coupler body, wherein the dust port is in communication with the interior bore.. ... Kennametal Inc

07/20/17 / #20170203374

Method for producing a rotary tool and rotary tool

A method is specified for producing a rotary tool (2) having a base body (4), which extends in a longitudinal direction (l) and in which at least one flute (6) is ground in by grinding in a first partial flute (12a) with a first helix angle (w1) in a first grinding step and by subsequently grinding in a second partial flute (12b) with a second helix angle (w2) in a second grinding step, the second helix angle differing from the first helix angle (w1) so that a flute (6) that expands in the longitudinal direction (l) is formed, wherein the two partial flutes (12a, 12b) are ground in using the same grinding wheel (11). In this way, a particularly quick production is realized. ... Kennametal Inc

07/13/17 / #20170197283

Superalloy composite preforms and applications thereof

In one aspect, composite preforms for the repair of superalloy parts and/or apparatus are described herein. For example, a composite preform comprises a nickel-based superalloy powder component, a nickel-based braze alloy powder component and a melting point depressant component disposed in a fibrous polymeric matrix. ... Kennametal Inc

07/13/17 / #20170197258

Rotary cutting tool with internal balancing feature

A rotary cutting tool has a central, longitudinal axis. One or more internal balancing features are disposed within a cavity of the rotary cutting tool. ... Kennametal Inc

06/15/17 / #20170165768

Tool for rotary-breaching workpieces

The invention relates to a tool for rotary-broaching workpieces, having a support (10) which can be directly or indirectly attached to a machine tool and having multiple segments (12) which are secured to the support (10), wherein multiple receiving areas for cutting inserts are provided on each of the segments (12), and wherein a hydraulic clamping unit (42) is provided on the support (10) for each segment (12), said segment (12) being clampable on the support (10) by means of the clamping unit (42).. . ... Kennametal Inc

06/15/17 / #20170165760

Setting system and tool

A setting system (20) for a tool (10) is described, and in particular for a rotary metal working tool, wherein the setting system (20) aligns at least one insert (14) of the tool (10). The setting system (20) comprises an adjusting unit (22), which cooperates with the insert (14), and actuating device (24), which includes at least one electric actuator (26) exerting an adjusting force on the adjusting unit (22). ... Kennametal Inc

06/15/17 / #20170165757

Ceramic cutting insert and method of making same

A cutting insert includes a body made of a ceramic material. The body has a first surface, a second surface and at least one flank surface extending between the first surface and the second surface. ... Kennametal Inc

06/08/17 / #20170159432

Smart cutting drum assembly

A cutting tool mounting assembly adapted for attachment to a surface of a rotatable driving member of a cutting tool machine. The cutting tool mounting assembly includes: a cutting tool; a base having a bottom portion for attachment to the surface of the rotatable driving member and a front portion that defines a receptacle having an inner wall; a bushing configured for receipt in the receptacle of the base and having an aperture for receiving the cutting tool; and a sensor element for acquiring and transmitting operation data.. ... Kennametal Inc

05/18/17 / #20170136562

Cutting tool and method for its manufacture

A cutting tool (2) is specified with a cutting region (4) that comprises a substrate (12) onto which a coating (10) is applied, which coating (10) is subsequently processed, whereby a sharp cutting edge (8) is formed. Furthermore, a corresponding method for the manufacture of the cutting tool (2) is specified. ... Kennametal Inc

05/18/17 / #20170136558

Milling cutter

A milling cutter (10), in particular a side milling cutter, is described, having a tool body (12), to which at least one cutting insert (14) is removably secured, said cutting insert being clamped by means of a movable clamping element (16) in the tool body (12) and comprising a cutting edge (18) pointing in the direction of rotation (r). The clamping element (16) clamps the cutting insert (14) from behind and is arranged on the rear side of the cutting insert (14) in the direction of rotation (r) of the milling cutter (10).. ... Kennametal Inc

05/11/17 / #20170129015

Methods of making metal matrix composite and alloy articles

In one aspect, methods of making freestanding metal matrix composite articles and alloy articles are described. A method of making a freestanding composite article described herein comprises disposing over a surface of the temporary substrate a layered assembly comprising a layer of infiltration metal or alloy and a hard particle layer formed of a flexible sheet comprising organic binder and the hard particles. ... Kennametal Inc

05/04/17 / #20170120351

Double-sided cutting inserts with positive clearance face geometry

A double-sided cutting insert that has a positive clearance face and includes a top portion, a bottom portion substantially identical to the top portion, and a middle portion. The inscribed diameter at the middle portion is larger than the inscribed diameter at each of the top portion and the bottom portion. ... Kennametal Inc

04/27/17 / #20170113282

Tool coupling between two coupling parts, and coupling part for such a tool coupling

A tool coupling used for a clamping connection between two coupling parts, in particular between a cutting head and a carrier of a rotary tool, in particular of a drill. The coupling parts comprise clamping sections, which respectively correspond to one another and which can be clamped against each other by turning counter to a predefined direction of rotation about an axis of rotation so that a press fit is produced. ... Kennametal Inc

04/27/17 / #20170113281

Rotary tool, particularly a drill, and a cutting head for such a rotary tool

A rotary tool comprising two coupling parts, namely a carrier and a cutting head in a front end surface. The carrier comprises a pin receptacle into which a coupling pin of the cutting head is inserted. ... Kennametal Inc

04/20/17 / #20170108327

Method and apparatus for center height alignment of a boring bar

A method and apparatus for center height alignment of a boring bar is disclosed. The apparatus includes a seat member with a bottom and a back, and a digital angle gauge mounted to the seat member. ... Kennametal Inc

04/13/17 / #20170100784

Cutting head, rotary tool and support for the rotary tool and for the accommodation of the cutting head

A cutting head is formed for insertion into a support in a modular rotary tool, in particular a drill. It has a coupling pin onto which outer cover surfaces and torque surfaces are formed as clamping surfaces. ... Kennametal Inc

04/13/17 / #20170100783

Modular drill

A drill has a replaceable cutting head mounted to a shank in an interlocking fashion. The shank has a pocket with at least one flat, vertically-angled retention surface located closer to a rotational axis than at least one driving surface. ... Kennametal Inc

04/06/17 / #20170096372

Hybrid nanocomposite coatings and applications thereof

In one aspect, articles are described herein comprising refractory coatings employing alumina-based hybrid nanocomposite architectures. A coated article described herein comprises a substrate and a coating deposited by cvd adhered to the substrate, the coating including a composite refractory layer having a matrix phase comprising alumina and at least one particulate phase within the matrix phase, the particulate phase comprising nanoscale to submicron particles formed of at least one of an oxycarbide and oxycarbonitride of one or more metals selected from the group consisting of aluminum and group ivb metals.. ... Kennametal Inc

03/23/17 / #20170080534

Rotary cutting tool having pcd cutting tip

A rotary cutting tool with an elongate body disposed about a longitudinal axis, the elongate body including a helical flute and a polycrystalline-diamond cutting tip. The cutting tip comprises an inner portion having an inner point angle and an outer portion having an outer point angle different from the inner point angle.. ... Kennametal Inc

03/16/17 / #20170072478

Rotary cutting tool with regrindable cutting inserts

A rotary cutting tool includes a cutter body having a plurality of insert-receiving pockets. Each pocket includes a bottom support surface, an axial support surface, a radial support surface, a top clearance surface and an intermediate clearance surface extending between the axial support surface and the top clearance surface. ... Kennametal Inc

03/02/17 / #20170057878

Cemented carbide with cobalt-molybdenum alloy binder

In one aspect, sintered cemented carbide compositions are described herein exhibiting desirable wear resistance without deleterious losses in fracture toughness. Such cemented carbide compositions can be employed as tooling in a variety of applications including earth boring and mining operations as well as machining various metals and alloys. ... Kennametal Inc

03/02/17 / #20170057033

Multi axis column module, a method of swapping tools, and a method of assembling

The disclosure relates to column module, more particularly it is relating to a multi-axis column module. The multi axis column module comprising a support structure of predetermined shape; at least one automatic tool changer [atc] consisting a tool magazine ensconcing a plurality of tools mounted onto the support structure, a drive unit with a spindle connected to said tool magazine, a gripper arm connected to the spindle of the drive unit; and at least one ram housing having at least one spindle at center and is mounted over the support structure. ... Kennametal Inc

03/02/17 / #20170056977

Toolholder with viscous fluid inertial mass damper

A toolholder includes a cutting tool mounted to a head attached to a collar at a first end of the toolholder. A shank is located at a second, opposite end of the toolholder. ... Kennametal Inc

02/16/17 / #20170043412

Inverted piloted collet chuck and applications thereof

Collet chucks are described herein having design and architecture for minimizing and/or mitigating collet misalignment during rotary tool coupling operations. For example, a collet chuck comprises a housing for connection and rotation with a spindle about an axis of rotation, wherein the housing defines a socket for receiving a collet. ... Kennametal Inc

02/09/17 / #20170036277

Cutting tool having at least partially molded body

A cutting tool for performing cutting operations on a workpiece when the cutting tool is rotated about a central axis by a machine tool, the cutting tool includes a generally cylindrical body disposed about the central axis. The generally cylindrical body includes a first end and an opposite second end. ... Kennametal Inc

02/09/17 / #20170036276

Tool holder assemblies and methods of using the same

In one aspect tool holder assemblies are described herein. Such tool holder assemblies can employ outer and inner spring-like members. ... Kennametal Inc

02/02/17 / #20170028482

Rotary cutting tool with blades having repeating, unequal indexing and helix angles

A rotary cutting tool with a longitudinal axis includes a shank portion and a cutting portion defining a length of cut. The cutting portion includes a plurality of blades separated by flutes extending along the length of cut. ... Kennametal Inc

02/02/17 / #20170028480

Rotary tool, in particular a drill, and a cutting head for said rotary tool

The rotary tool (2) is in particular designed as a modular drill and extends in an axial direction (4) along an axis of rotation (6). It comprises two coupling parts, namely a carrier (10) and a cutting head (12) that is attached to the carrier (10) so as to be exchangeable. ... Kennametal Inc

01/26/17 / #20170022600

Evaporator body with titanium hydride coating, method for the production and usage thereof

An evaporator body for a pvd coating system comprises a basic body and an evaporator surface, to which a titanium dihydride layer is applied. A titanium hydride layer comprises an organic carrier agent and titanium hydride as the single inorganic solid. ... Kennametal Inc

01/26/17 / #20170021434

Method for producing a machining tool and machining tool

In order to achieve a long service life for a machining tool, in particular for a solid carbide drill, it is provided with a special wear protection coating. In a first method step, in order to form this coating, a first layer made of a first material is applied in the region of a cutting edge and in the adjoining surface regions, and specifically, a flank face and a rake face. ... Kennametal Inc

01/19/17 / #20170014920

Double-sided tangential cutting insert and cutting tool system using the same

A double-sided tangential cutting insert, as well as a tool holder system that carries a plurality of the double-sided tangential cutting inserts, that has a peripheral side shape, as viewed from one of said cutting rake faces, that includes a pair of generally identical opposing main cutting edges wherein each of the main cutting edge comprises a substantially straight main cutting edge portion and an adjoining convex main cutting edge portion. The convex main cutting edge portion is truncated by an adjacent convex minor side face so as to define a generally sharp edge and a point of truncation. ... Kennametal Inc

01/05/17 / #20170001916

Aqueous slurry for making a powder of hard material

An aqueous slurry that is useful upon being spray dried for the formation of a powder of hard material. The aqueous slurry includes starting powder components of the hard material. ... Kennametal Inc

01/05/17 / #20170001248

Indexable drill insert and rotary cutting tool employing same

An insert includes four identical cutting edges disposed at the intersection of top and side surfaces surface. Each cutting edge includes a first part edge disposed tangent to a first reference circle aligned about the central mounting aperture; a second part edge extending from the first part edge, the second part edge being connected to the first part edge via a convex curved portion; a third part edge disposed tangent to a second reference circle aligned about the central mounting aperture, the second reference circle having a smaller diameter than the first reference circle, the third part edge being connected to the second part edge via a concave curved portion; and a convexly curved corner portion extending from the third part edge of one of the identical cutting edges to the first part edge of another one of the identical cutting edges.. ... Kennametal Inc








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